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RAX-A compact instrument for Raman Spectroscopy aboard the Phobos rover of the MMX mission

Ryan, Conor and Ulamec, Stephan and Kameda, Shingo and Rull, Fernando and Schröder, Susanne and Hübers, Heinz-Wilhelm and Usui, Tomohiro and Böttger, Ute and Belenguer, Tomas and Moral, Andoni and Gensch, Michael and Buder, Maximilian and Hagelschuer, Till and Kopp, Emanuel and Cho, Yuichiro and Pérez, Carlos and Peter, Gisbert and Rodriguez, Pablo and Rodd-Routley, Selene and Säuberlich, Thomas and Schrandt, Friedrich and Dietz, Enrico and Yumoto, Koki (2021) RAX-A compact instrument for Raman Spectroscopy aboard the Phobos rover of the MMX mission. In: 43rd COSPAR Scientific Assembly. 43rd COSPAR, January 28th - February 4th, 2021, Sydney (virtuell).

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Abstract

The JAXA "Martian Moon Exploration" (MMX) mission to Phobos will include a small rover (see presentation S. Ulamec) which carries the Raman Spectrometer for MMX "RAX". The instrument is compact and lightweight yet sensitive enough to allow precision measurements of the mineralogical composition of Phobos' surface material. Here we describe the preliminary system design of the RAX spectrometer and its performance goals. It consists of an external compact laser source, fiber coupled to a spectrometer and a focusing unit as well as ancillary systems. The laser source for the spectrometer has been developed by INTA/Universidad de Valladolid for the Raman Laser Spectrometer (RLS) onboard ESAs Exomars Rover. The highly miniaturised RAX Spectrometer module (RSM) is a new development by DLR which contains a multi-objective optical system and space qualified detector and is optimized for size and performance. The focusing unit from JAXA/University of Tokyo provides finely resolved open-loop focusing over a 15 mm stroke. The entire RSM has a mass of less than 1.4 kg and a volume of only 81 x 98 x 125 mm³. RAX will be operated with the rover in-the-loop. Thus automated focusing, measurement and in-situ data processing will allow autonomous Raman spectra measurements of regolith to be taken at various sites of interest on Phobos (see presentation S. Routley). These measurements will be validated against measurements on Earth and Raman-spectra libraries. An in-flight verification is used for instrument calibration after launch. The data obtained will be compared with the Raman spectra from the ExoMars2020 mission on the Martian surface and thus support determining the origin of Phobos.

Item URL in elib:https://elib.dlr.de/148058/
Document Type:Conference or Workshop Item (Speech)
Title:RAX-A compact instrument for Raman Spectroscopy aboard the Phobos rover of the MMX mission
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ryan, ConorDLR, Institut für Optische SensorsystemeUNSPECIFIED
Ulamec, StephanDLR-Köln, MUSC, stephan.ulamec (at) dlr.deUNSPECIFIED
Kameda, ShingoDep. of Physics, Rikkyo University, TokyoUNSPECIFIED
Rull, FernandoDepartment of Condensed Matter Physics, Crystallography and Mineralogy, Valladolid University, Valladolid, Spain.UNSPECIFIED
Schröder, SusanneDLR, Institut für Optische SensorsystemeUNSPECIFIED
Hübers, Heinz-WilhelmDLR, Institut für Optische Sensorsysteme, BerlinUNSPECIFIED
Usui, TomohiroJapan Aerospace Exploration Agency (JAXA), Institute of Space and Astronautical ScienceUNSPECIFIED
Böttger, UteDLR, Institut für Optische SensorsystemeUNSPECIFIED
Belenguer, TomasInstituto National de Técnica Aerospacial (INTA)UNSPECIFIED
Moral, AndoniInstituto National de Técnica Aerospacial (INTA)UNSPECIFIED
Gensch, MichaelDLR, Institut für Optische Sensorsysteme/Technische Universität BerlinUNSPECIFIED
Buder, MaximilianDLR, Institut für Optische SensorsystemeUNSPECIFIED
Hagelschuer, TillDLR, Institut für Optische SensorsystemeUNSPECIFIED
Kopp, EmanuelDLR, Institut für Optische SensorsystemeUNSPECIFIED
Cho, YuichiroThe University of Tokyo, Department of Earth and Planetary ScienceUNSPECIFIED
Pérez, Carloscarlos.perez (at) cab.inta-csic.esUNSPECIFIED
Peter, GisbertDLR, Institut für Optische SensorsystemeUNSPECIFIED
Rodriguez, PabloInstituto National de Técnica Aerospacial (INTA)UNSPECIFIED
Rodd-Routley, Seleneselene.routley (at) dlr.deUNSPECIFIED
Säuberlich, ThomasDLR, Institut für Optische SensorsystemeUNSPECIFIED
Schrandt, FriedrichDLR, Institut für Optische SensorsystemeUNSPECIFIED
Dietz, EnricoEnrico.Dietz (at) dlr.deUNSPECIFIED
Yumoto, KokiThe University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-0033, JapanUNSPECIFIED
Date:January 2021
Journal or Publication Title:43rd COSPAR Scientific Assembly
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Raman-Spektroskopie, MMX, RAX, Phobos
Event Title:43rd COSPAR
Event Location:Sydney (virtuell)
Event Type:international Conference
Event Dates:January 28th - February 4th, 2021
Organizer:COSPAR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical Technologies and Applications
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Space Instruments
Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Hagelschuer, Till
Deposited On:10 Jan 2022 07:17
Last Modified:10 Jan 2022 07:17

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